I'm trying to main PAC-MAN and I find it very hard to charge at lower percents due to how much distance my opponent is covering and how low PAC-MAN's knockback growth is, how do I maximize space to charge my fruit?
I tend to go against the grain with my opinion on Pac-Man, but here's what I think:
During a match, and especially at the beginning of one, you should be vying for stage control over charging fruit. Fruit charge should come when you've created a good opportunity to do so, and not before.
In order to do this, on the tri-platform stages like battlefield and dreamland, I would recommend using the trampoline heavily to force people to approach you from the air, and possibly through platforms.
On stages like FD, DH (I recommend you avoid these two), SV, Lylat, and T&C, I would open matches trying to get some stage control, and then try to charge to fruit of choice.
The low base/growth knockback of Pac-Man's attacks makes it difficult to force people away at low %, but it does make the easier to combo. I would recommend you look to actually fight, then charge fruit if you opponent lets you or if you have spare time.